Give the exact value.csc 210°
A. 
B. 2
C. -2
D. - 
Answer: C
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The decibel, a measure of loudness, is related to the relative intensity of sound by the formula
Decibels 
(Relative intensity).
If relative intensity is multiplied by 1,000, how are decibels affected?
?
A. Decibels are increased by 3. B. Decibels are decreased by 3. C. Decibels are increased by 30. D. Decibels are decreased by 30.
Solve the system. x - y + 4z = 144x+ z = 3 x + 3y + z = -3
A. {(3, 0, -2)} B. {(0, -2, 3)} C. {(3, -2, 0)} D. ?
To make 500mL of 1:10 boric acid solution. How much of a 40% stock supply should you start out with?
A. 125mL B. 2L C. 100mL D. cannot be done
Solve using any appropriate method. If the system has an infinite number of solutions, use set-builder notation to write the solution set. If the system has no solution, state this.9x + 9y = -274x + 3y = -14
A. No solution B. (-10, 4) C. (-5, 2) D. (5, 2)